/**
 * Created by radish608 on 17-3-4.
 */
public class Shift {
    public static void main(String[] args) {
        int number = 1;
        System.out.printf("2^0: %d%n", number);
        System.out.printf("2^1: %d%n", number << 1);
        System.out.printf("2^2: %d%n", number << 2);
        System.out.printf("2^3: %d%n", number << 3);
    }
}
